/*
 * The MIT License
 *
 * Copyright 2014 David Rodenas Pico.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package edu.uoc.sd.fr14.model;

import edu.uoc.sd.fr14.actors.Cluster;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;

/**
 * You should not use this class.
 * <p>
 * 
 * This class is used by configuration to instance the right
 * Server instance for the current experiment.
 * It assumes that all Server instances constructors always
 * receives the same exact arguments that AbstartServer
 * and their inherit from them. 
 * 
 * @author drodenas
 * @see AbstractServer#AbstractServer(ServerState, Cluster)
 */
public class ServerFactory {

    public static AbstractServer create(ServerId serverId, Class<AbstractServer> serverClass, Cluster cluster) {
        if (serverId == null) throw new NullPointerException("Illegal argument: serverId cannot be null");
        if (serverClass == null) throw new NullPointerException("Illegal argument: serverClass cannot be null");
        if (cluster == null) throw new NullPointerException("Illegal argument: cluster cannot be null");
        
        ServerState state = new ServerState(serverId);
        
        try {
            Constructor<AbstractServer> constructor = serverClass.getConstructor(ServerState.class, Cluster.class);
            AbstractServer server = constructor.newInstance(state, cluster);
            if (!(server instanceof AbstractServer)) {
                throw new IllegalStateException("Illegal configuration: serverClass '"+serverClass+"' must inherit from AbstractServer");
            }
            return server;
        } catch (NoSuchMethodException | SecurityException | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException ex) {
            throw new IllegalStateException("Illegal configuration: serverClass '"+serverClass+"' cannot be instantiated", ex);
        }
        
    }

}
